Constipation in Children
Constipation is one of the most common issues I see in my clinic. It can cause significant stress for families, but it is very treatable. Early management relieves discomfort, stops the stool withholding cycle, and helps your child return to comfortable, regular bowel habits.
How Do I Know if My Child Is Constipated?
In my experience, many parents assume constipation strictly means going several days without a bowel movement. However, I evaluate many children who pass stool every single day but remain significantly constipated because they aren’t emptying their bowel fully or are passing painful, hard stools.
Signs and symptoms I commonly look for include:
- Hard, dry, pellet-like, or unusually large stools
- Pain, crying, or marked straining during bowel movements
- Fewer than three bowel movements in a week
- Recurrent abdominal pain, bloating, or a reduced appetite
- Anal fissures (painful cracks around the anus), often causing small streaks of bright red blood
- Stool withholding behaviors or an outright fear of the toilet
- Unusually large stools that frequently clog the toilet
- Involuntary liquid or soft stool leaking into the underwear (encopresis)
Why Does Constipation Happen?
The stool-withholding cycle
In my clinical experience, functional constipation almost always stems from a vicious cycle. It often starts when a child experiences one unusually hard or painful bowel movement. Fearing that the next one will hurt just as much, the child naturally begins to hold it in.
The colon’s primary job is to absorb water. The longer stool sits in the rectum, the drier, larger, and harder it gets. When the child finally passes it, it hurts again—reinforcing their fear. My primary goal in treatment is to break this cycle by keeping stools soft and painless while rebuilding toilet confidence.
Triggers I commonly identify in my patients include:
- Early or high-pressure toilet training before the child is ready
- A past painful bowel movement or an active anal fissure
- Transitions like starting daycare, preschool, or kindergarten
- Reluctance to use unfamiliar or public school washrooms
- Illness, dehydration, travel, or disruptions to daily routine
- Diets low in fibre or inadequate fluid intake
- Selective or sensory-based eating habits
- Developmental or behavioral factors affecting routine and body awareness
How I Treat Childhood Constipation
When I design a treatment plan for a child in my clinic, I tailor it to their age, overall health, and whether there is a significant buildup of backed-up stool. Effective pediatric management almost always follows a two-phase medical and behavioral approach:
If I find significant stool buildup on examination, we must clear the bowel first. Attempting maintenance therapy without addressing an impaction is a common reason treatment fails.
Once clear, I prescribe a daily maintenance laxative. In my practice, Polyethylene Glycol (PEG 3350) is my first-line choice because it is safe, effective, gentle, and non-habit forming for long-term pediatric use.
I instruct parents to schedule 5-minute toilet sits roughly 20–30 minutes after meals (capitalizing on the natural gastrocolic reflex). The focus should strictly be on relaxed sitting, not forcing a stool.
I emphasize proper mechanics: children need a footstool so their knees sit higher than their hips, providing a stable base to push comfortably without straining.
I encourage age-appropriate fibre (fruits, vegetables, legumes, whole grains) and plenty of water. While diet supports bowel health, I always remind parents that diet alone rarely resolves an established withholding habit.
This is the most crucial step I discuss with parents. It takes months for a stretched rectum to regain its normal size and tone. Stopping medication as soon as stools look normal almost always leads to a relapse.
Better Toilet Positioning
Anatomy-friendly positioning is key
- Feet firmly supported on a stool (no dangling legs)
- Knees positioned slightly higher than the hips
- Upper body leaning gently forward
- Elbows rested comfortably on the thighs
- Relaxed, open-mouth breathing (avoid holding breath or forceful strain)
I caution parents against teaching children pelvic floor muscle contractions (“Kegels”) unless guided by a professional. Most constipated children need to learn how to relax their pelvic floor muscles, not tighten them.
When I Recommend Additional Allied Healthcare Support
Registered Dietitian
I refer patients to a dietitian when constipation is complicated by extreme picky eating, severe sensory food selectivity, poor growth, or when parents need structured guidance on fluid and fibre goals.
Occupational Therapist (OT)
An OT is invaluable when I see children struggling with bathroom sensory anxieties, difficulty reading bodily signals (interoception), motor planning challenges, or intense resistance to routine changes.
Pelvic-Health Physiotherapist
I recommend pediatric pelvic-health physiotherapy for kids with persistent dyssynergic defecation—where they accidentally tighten their pelvic floor while straining—or ongoing leakage despite soft stools.
Calgary Community & Support Resources
Publicly Funded Healthcare Services in Calgary
Health Link (811) and Registered Dietitians: I often remind Calgary families that calling 811 gives them free access to Alberta Health Services advice and direct connections to the Health Link Dietitian Service for personalized pediatric nutrition guidance.
AHS Pediatric Community Rehabilitation: When my patients require multidisciplinary support for developmental, sensory, or self-care needs related to toileting, I look to AHS Pediatric Community Rehabilitation programs.
AHS Pediatric Community Rehabilitation
Free Toilet-Training Education: MyHealth Alberta offers an excellent, OT-informed series on toilet readiness that I frequently share with parents:
Toilet Training Basics: Getting Ready | When to Get More Help
When I Refer Patients to Pediatric Gastroenterology
As a pediatrician, I manage the vast majority of childhood constipation successfully in primary care. However, there are specific clinical red flags or complex cases where I refer my patients to a specialist in Pediatric Gastroenterology.
Clinical reasons for a specialist assessment:
- Constipation presenting in early infancy (under 1 month of age)
- Delayed passage of meconium (a newborn taking longer than 48 hours to pass their first stool)
- Persistent blood in the stool without an observable anal fissure
- Weight loss, poor weight gain, or faltering growth velocity
- Persistent vomiting, severe abdominal distension, or uncharacteristic abdominal pain
- Clinical suspicion of underlying systemic conditions (e.g., Celiac disease, Hypothyroidism)
- Anatomical abnormalities, narrowing, or scarring around the anus
- Abnormal findings on neurological or lower-spine examination
- Severe developmental or mental health challenges significantly complicating treatment
- Refractory stool impaction that fails to clear with standard protocols
- Persistent fecal incontinence despite months of compliant laxative therapy and soft stools
- No noticeable clinical improvement despite an optimized, well-adhered treatment plan
The specialist clinic at Alberta Children’s Hospital cares for complex pediatric GI and liver disorders. A referral from a pediatrician or family physician is required.
When I submit a referral, I ensure comprehensive notes are included detailing the child’s growth trajectory, examination findings, medication trials, doses, and long-term treatment response.
Alberta Children’s Hospital Pediatric Gastroenterology ClinicWhen to Seek Urgent Medical Attention
- Green or yellow-green (bilious) vomiting
- Severe, sudden, or rapidly worsening abdominal swelling
- Intense, persistent abdominal pain that keeps the child from settling
- Fever in a child who appears lethargic or systemically unwell
- Inability to keep fluids down due to repeated vomiting
- Marked weakness, confusion, or severe signs of dehydration
- Any suspicion of an acute bowel obstruction
Frequently Asked Questions I Hear from Parents
Does my child need to have a bowel movement every single day?
In my clinic, I tell parents that daily bowel movements aren’t strictly required for every child. Normal frequency varies. Stool consistency, comfort, and effortless passing are far more important indicators of bowel health than exact daily frequency.
Could my child’s underwear leakage really be constipation?
Yes, absolutely. In my practice, the majority of fecal leakage I treat is caused by an underlying bowel blockage stretching the rectum. Soft stool leaks around the hard mass automatically. It is almost never intentional.
Can’t we fix this with just extra water and fibre?
While healthy diet and fluids are foundationally important, I find they are rarely enough to fix an established withholding habit or severe impaction on their own. Once the rectum is stretched, proper medication is usually needed alongside diet to allow the muscle to heal.
Should I make my child stay on the toilet until they produce a stool?
I strongly advise against this. Forcing prolonged toilet sits creates anxiety and increases resistance. I recommend short, positive 5-minute sits after meals with supported feet and praise for their effort, regardless of whether they pass stool.
Does my child need pelvic-floor exercises?
Not typically. In my practice, children with constipation usually need to learn pelvic floor relaxation rather than strengthening. An evaluation by a specialized pediatric pelvic-health physiotherapist can confirm what your child needs.
Helpful Clinical & Parent Resources
View the AHS pathway
View constipation resources
Visit MyHealth Alberta
Learn about Health Link 811
Visit Caring for Kids
Questions About Your Child’s Bowel Health?
At Calgary Children’s Clinic, I provide comprehensive pediatric consultations to evaluate and manage childhood constipation, stool withholding, abdominal pain, fecal leakage, and complex toilet-training challenges.